CN103339885B - For selecting the system and method for the radio network information channel of wireless network jockey - Google Patents
For selecting the system and method for the radio network information channel of wireless network jockey Download PDFInfo
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- CN103339885B CN103339885B CN201180053666.8A CN201180053666A CN103339885B CN 103339885 B CN103339885 B CN 103339885B CN 201180053666 A CN201180053666 A CN 201180053666A CN 103339885 B CN103339885 B CN 103339885B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Abstract
A kind of wireless network jockey, its scan available channels, and collect the data relevant with RF environment with channel.Use this information, each wireless network jockey determines the value at cost of each available channel and the mass value of its whole RF neighborhood.Each wireless network jockey selects the channel with optimum cost value as the candidate channel that will use.Wireless network jockey can submit to channel request to ratify to moderator.If plural wireless network jockey just asks same channel, then moderator by this channel allocation to the wireless network jockey with the poorest RF neighborhood quality.If the channel request of wireless network jockey goes through, then moderator notice wireless network jockey.If the channel request of wireless network jockey does not go through, then wireless network jockey will rescan residue available channel to select the different candidate channel of issued for approval.
Description
Technical field
The present invention relates to wireless network jockey field, particularly relate to for configuring wireless network jockey with the system and method worked when close to each other.Many tissues provide wireless network to their user and/or general public.Usually, need multiple wireless network jockeys of such as WAP (wireless access point) etc. to provide effective wireless network to access to user on large physical region.Such as, a large amount of WAP (wireless access point) worked together may be there are, with building more than, campus or even area and city in provide wireless network to access.
Background technology
Usually, the wireless network jockey of such as WAP (wireless access point) etc. uses more than one RF channel to communicate.Along with the phsyical density of WAP (wireless access point) increases, use the interference between multiple wireless network jockeys of identical or overlapped channels to become and more may.As the result of the channel disturbance from other radio network device and other both radio interference source, the network performance of user reduces.
To different or non-overlapped channel allocation neighboring wireless networks jockey for alleviating a kind of method of channel disturbance.Mode or the distributed way work in a centralized usually of existing method.Centralized approach collects data from major part or all wireless network jockeys, and the gratifying channel allocation utilizing this full view of wireless network to determine for wireless network jockey.The shortcoming of the method needs central entities to collect data, network data determine channel allocation from all-network jockey.
Distributed channel distributing method depends on wireless network jockey and selects optimum channel or negotiated channel allocation between the devices for self.But last method causes the channel allocation of the non-optimal on whole network, then a method needs to exchange a large amount of message between wireless network jockey.In addition, the method may need to take a long time to converge to stable channel allocation.In addition, the medium and small change of RF environment may cause chain reaction, thus causes the channel allocation on whole wireless network to change.
Accompanying drawing explanation
With reference to accompanying drawing, the present invention is described, wherein:
Fig. 1 illustrates example wireless network channel allocation;
Fig. 2 illustrate according to the embodiment of the present invention for the method to wireless network jockey allocated channel; And
Fig. 3 illustrates all or part of the computer system being suitable for realizing the embodiment of the present invention.
Summary of the invention
Embodiments of the invention are used in the considerably less distributed computing technology of the data that to need between wireless network jockey to exchange to wireless network jockey allocated channel.In addition, embodiments of the invention Fast Convergent is to stable channel allocation.In an embodiment, wireless network jockey scan available channels, and collect the data relevant with RF environment with channel.Use this information, each wireless network jockey determines the value at cost of each available channel and the mass value of its whole RF neighborhood.In an embodiment, each wireless network jockey selects the channel with optimum cost value as the candidate channel that will use.Then, use moderator solves the conflict between the wireless network jockey that have selected same candidate channel.
The device of moderator is used as, then the wireless network jockey channel request of submitting for approval to moderator if existed.In embodiments of the present invention, if plural wireless network jockey asks identical channel in the roughly the same time, then moderator by this channel allocation to the wireless network jockey with the poorest RF neighborhood quality.If the channel request of wireless network jockey goes through, then moderator notice wireless network jockey.If the channel request of wireless network jockey is not granted, then wireless network jockey will rescan residue available channel to select the different candidate channel of issued for approval.
In an embodiment, if do not have arbiter means, then the candidate channel using it to expect is monitored other network connection device by wireless network jockey.In embodiments of the present invention, if there is other network connection device using identical expectation candidate channel, then the wireless network jockey conflicted exchanges RF neighborhood quality information.Use this information, wireless network jockey abdicates channel by the wireless network jockey with the poorest RF neighborhood quality.
Embodiment
Fig. 1 illustrates the example of wireless network 100 and channel allocation thereof.Wireless network 100 comprises multiple WAP (wireless access point) and/or other network connection device 105 that wireless network can be provided to connect to such as desk-top, portable client terminal device, tablet computer systems, smart mobile phone or other hand-held device with server computer system etc. and/or other device that wireless network can be used to be connected carry out communicating.
Example wireless network 100 comprise WAP (wireless access point) 105a, 105b, 105c, 105d, 105e, 105f, 105g, 105h, 105i, 105j, 105k, 1051,105m, 105n, 105o, 105p and 105q.But embodiments of the invention can be applicable to comprise in the WAP (wireless access point) of any amount and/or the wireless network of other wireless network jockey 105.In example wireless network 100, WAP (wireless access point) 105 can use any wireless networking techniques known in the art and agreement, comprises IEEE802.11 wireless network connection standard family, Zigbee with 802.15.4 wireless network connection standard, uses the femtocell network of CDMA, GSM, WiMAX, LTE to be connected and/or one or more in other cellular network connection standard.
Although in order to clear and omit from Fig. 1, wireless network jockey 105 can connect via wired or wireless network and be connected with more than one local area network (LAN) or wide area network.Local area network (LAN) and/or wide area network can comprise the network equipment of such as hub, the network switch, network router, Multifunctional gateway and software and/or hardware firewall etc.In an embodiment, wireless network 100 can also comprise the more than one WAP (wireless access point) manager of the configuration for controlling WAP (wireless access point) 105.WAP (wireless access point) manager can facilitate the configuration of the deployment of network strategy, software and firmware upgrade and WAP (wireless access point) 105, and can monitor the Internet Use of client via WAP (wireless access point).
Example wireless network 100 comprises three different wireless channels.In FIG by each channel of different shadow representation.As shown in Figure 1, channel allocation is maximized to make the distance between the different radio access point of use same channel to WAP (wireless access point) 105, thus minimizes radio interference.Although example wireless network 100 uses three different wireless channels, but embodiments of the invention according to comprise the sum of available channel in this wireless networking techniques, the channel do not used by other device of this wireless network control and with the factor that the environment RF of more than one available channel disturbs etc., the channel of any amount can be used.Such as, IEEE802.11b/g standard has 14 available channels altogether, but, 11 in these channels usually only can be used in the U.S..In addition, the adjacent channel of these standards is overlapping, thus usually only there are 3 or 4 non-overlapped available channels.
As mentioned above, embodiments of the invention use distributed computing technology to determine the channel allocation in the wireless network with multiple WAP (wireless access point) or other wireless network jockey.Fig. 2 illustrates for the method 200 to wireless network jockey allocated channel according to the embodiment of the present invention.In an embodiment of the present invention, the wireless network jockey of such as WAP (wireless access point) etc. during their respective initialization, the separate independent example carrying out method 200 separately.
In step 205, wireless network jockey scans all available wireless network channels to identify any contiguous WAP (wireless access point) and to collect the data relevant with each radio network information channel.Embodiments of the invention can in turn or random scan available channel.In an embodiment, step 205 judges whether each channel is just used, and if use, then judges the quantity of the detected WAP (wireless access point) using given channel.The embodiment of step 205 can also measure the qualitative attribute of each channel, it comprises user load, RF interference, send, receive and/or total channel utilance, the end of making an uproar, PHY error rate, TX or RX frame loss rate, TX/RX bit rate use and/or successfully distribute, the crc error rate of each channel, if and/or contiguous WAP (wireless access point) detected arbitrarily uses this channel, then can also measure received signal strength indicator (RSSI) or the signal to noise ratio of each contiguous WAP (wireless access point) using given channel.The embodiment of step 205 can also judge the quantitative attributes of each channel, and it is indoor or outdoor that it comprises other channel overlap that whether this channel just using with any, whether this channel uses dynamic frequency selection (DFS) and/or this channel to be used for.
Step 210, based on the data collected by step 205, judges the quality of the RF neighborhood of wireless network jockey.In an embodiment, RF neighborhood quality is the average received signal strength based on neighboring wireless networks jockey.This can be determined by the mean value of this value of all available channels that is averaged to the RSSI data of each channel, then determines.Another embodiment of step 210 can use minimum RSSI value in all adjacent network jockeys as estimating RF neighborhood quality.The embodiment of step 210 can comprise above-mentioned other factors, such as the quantity etc. of RF interference or contiguous WAP (wireless access point).Usually, more neighboring wireless networks jockey and/or the stronger signal from neighboring wireless networks jockey or other RF source reduce RF neighborhood quality.
Step 215, based on the data collected by step 205, determines the value at cost of each available channel.In an embodiment, step 215 uses and considers that the cost function of some or all above-mentioned factors determines value at cost.The more than one value at cost that embodiments of the invention can use the cost function of any type known in the art to determine for each available channel.In an embodiment, the cost function of step 215 distributes initial cost value to available channel, is then added based on more than above-mentioned one factor this initial cost value or subtracts each other.In another embodiment, step 215 determines the weighted sum of above-mentioned two or more factor.In another embodiment, step 215 determines value at cost based on applying more than one Boolean calculation to parameter vector, and wherein, this parameter vector is based on the data collected by step 205.
In an embodiment again, compared with use measured value itself, the value at cost of step 215 uses the value calculated by value that is measured or determined above-mentioned factor.Such as, the embodiment of step 215 based on the measured value of each factor, can distribute score that is positive or that bear or point value to each factor.Whether can to drop within the scope of specific value based on the measured value of factor or more than one or more threshold value or below, distribute different score or point value.Such as, if the channel utilization of channel is less than 10%, then this factor can be assigned with point value 0 in cost function.If the channel utilization of this channel is between 10% and 20%, then can distribute point value-10 to this factor in cost function.
An exemplary cost function can be following function Cost.
Wherein, N is the quantity of the network connection device using the WAP (wireless access point) of channel or other radio detection to arrive, C
adjthe interpolation based on the point of the measurement to the interference from neighboring wireless networks jockey or minimizing, C
overlapbe based on this channel whether with interpolation or the minimizing of the point of any other channel overlap just used, and C
powerinterpolation or the minimizing based on whether such as there is the point limited for the maximum power of this channel due to FCC or other code requirement.
The candidate channel that step 220 selects the channel with optimum cost value to use as this wireless network jockey.According to the concrete form of cost function, optimum cost value can be least cost value or tip heigh value.
Step 225 judges whether to there is the network connection device that at least one is designated as the addressable moderator of wireless network jockey.In an embodiment, more than one WAP (wireless access point) can be specified as moderator.The network connection device being used as moderator reduces or prevents the channel confliction from the wireless network jockey using same channel.In an embodiment, manually select network connection device as moderator by network manager.In another embodiment, by the automatic distribution network jockey of the wireless network jockey in the RF area of coverage each other be used as moderator.In another embodiment, the wireless network jockey connected by the identical backhaul network sharing such as ethernet network or switching network etc. carrys out automatic distribution network jockey to be used as moderator.Usually, the wireless network jockey within the scope of RF each other should use identical moderator.Such as, the network connection device of in building can be appointed as moderator.
If there is no be designated as the network connection device of moderator, then method 200 enters step 230.In step 230, wireless network jockey enters listen mode, and judges whether to there is other wireless network jockey any using selected candidate channel.If there is no use other wireless network jockey of this candidate channel, then method 200 enters step 240, and selects the candidate channel that wireless network jockey uses.
On the contrary, if step 230 is judged as that other wireless network jockey more than one is just using selected candidate channel, then method 200 enters step 235.In step 235, candidate channel selected by this wireless network jockey uses and this other wireless network jockey more than one exchange messages, and which judging in these devices based on step 210 determined RF neighborhood quality measured value to have the minimum RF neighborhood of quality with.If step 235 is judged as compared with the neighboring wireless networks jockey with it on same channel, this wireless network jockey has minimum RF neighborhood quality, then method 200 enters step 240, and allows the candidate channel selected by the use of this wireless network jockey.Represent that this wireless network jockey has the message of lower RF neighborhood quality, so these other neighboring wireless networks jockeys abdicate this selected candidate channel by this wireless network jockey because other neighboring wireless networks jockeys all have received from this wireless network jockey.When link between the wireless network jockey that two or more has identical RF neighborhood quality, can based on any benchmark of the MAC Address of such as wireless network jockey etc. or attribute, this channel allocation is given linked wireless network jockey one of them.
If step 235 is judged as that wireless network jockey does not have minimum RF neighborhood quality, then method 200 turns back to step 205 to rescan available channel.In an embodiment, in the previous ones of wireless network jockey keeping method 200, distribute to the list of the channel of other wireless network jockey, thus these channels can be skipped during rescaning.Which reduce and rescan required time quantum, because this reducing for the convergence time to all wireless network jockey allocated channels.Wireless network jockey can repeat step 205 ~ 255 arbitrary number of times, until find the channel that will use.
Turn back to step 225, if wireless network jockey detects that at least one is used as the network connection device of moderator, then method 200 enters step 245.Step 245 is to moderator channel request message.In an embodiment, the candidate channel selected by channel request message identification.In another embodiment, channel request message comprises the additional data of such as neighborhood quality measured value and/or the wireless network jockey value at cost etc. for selected candidate channel.
In an embodiment, as the network connection device of moderator from the more than one wireless network jockey receive channel request message of the given channel of request, and determine which in these wireless network jockeys to be distributed to asked channel.In an embodiment, moderator compares following RF neighborhood quality measured value, and authorize institute's request channels to the wireless network jockey with minimum quality RF neighborhood, wherein these RF neighborhood quality measured values together receive with each channel request message being associated with given channel.In another embodiment, the channel value at cost of moderator to this channel of each wireless network jockey from the given candidate channel of request compares, and authorizes asked candidate channel to the wireless network jockey with most high channel value at cost.
When link between plural wireless network jockey, moderator can to one of them at random allocated channel of linked network connection device.In other embodiments, moderator can use the value at cost of each wireless network jockey be associated with institute request channels to determine channel allocation.In another embodiment, walk abreast due to wireless network jockey but carry out the independent example of method 200 asynchronously, so the time period that moderator can be waited for such as 15 seconds etc. after receiving the first request for any given channel, with reserve other wireless network jockey ask needed for time.Then, moderator asked channel allocation is given the wireless network jockey that sends request during this time period one of them, such as there is the wireless network jockey of the poorest RF neighborhood quality.
In response to more than one channel request message, moderator asked channel allocation is given carrying out the wireless network jockey of asking one of them.Then, moderator to the wireless network jockey transmitting channel approval message being assigned with institute's request channels, and alternatively, to other wireless network jockey transmitting channel refuse information requesting this channel at about same time.
In step 250, wireless network jockey judges whether to have received channel approval message for selected candidate channel from moderator.If so, then method 200 enters step 255, wherein, and the candidate channel that step 255 selects wireless network jockey to use.
On the contrary, if wireless network jockey is judged as have received channel refuse information or basic not from the response message of moderator in step 250, then method 200 turns back to step 205 to rescan available channel, and selects different candidate channel.Wireless network jockey can repeat step 205 ~ 255 arbitrary number of times, until find the channel that will use.
In some cases, the RF environment be associated with wireless network and channel utilization may disturb owing to introducing and change.In an embodiment, each wireless network jockey monitors the RF environment be associated with the channel that it is just using.If the more than one parameter of RF environment changes in fact, then wireless network jockey can abandon its present channel, and repetition methods 200 is to select different channels.Such as, if the interference utilance of channel and/or crc error rate increase to more than absolute threshold or relative threshold, then its present channel abandoned by wireless network jockey, and repetition methods 200 is to select different channels.
In another embodiment, with fixed intervals, such as during arranged downtime, the channel allocation process for all wireless network jockeys in wireless network can be repeated.This makes it possible to based on current network configuration and RF environment, and the initial condition according to blank determines channel allocation.Usually, the downtime arranged may be the quitting time section in the such as late into the night etc., to make user unaffected.But the RF environment of quitting time section may be different from the RF environment of section normal working hours.In order to produce the channel allocation of the RF environment reflecting section normal working hours more accurately, the RF environmental information of another embodiment of the present invention record section normal working hours.During arranged downtime, this embodiment of the present invention carries out method 200 as above, but uses the RF environmental information of precedence record, and does not use the information relevant with current quitting time RF environment.
As mentioned above, the wireless network jockey 105 in Fig. 1 can connect via wired or wireless network and be connected with more than one local area network (LAN) or wide area network.Wired or wireless network between wireless network jockey and more than one local area network (LAN) or wide area network is connected and is called that backhaul network connects.If it is that wireless network connects that the backhaul network of more than one wireless network jockey 105 connects, then embodiments of the invention the revision of using method 200 can select the channel that connects for backhaul network originally.In this embodiment of method 200, step 205 scan available channels is to identify whether to there is existing netted (mesh) channel and to determine contiguous wireless network jockey and channel data.According to carry out step 210 as mentioned above ~ 220.If find netted channel, then wireless network jockey adds this netted channel.If there is no current netted channel, then wireless network jockey selects the channel with optimum cost value as netted channel.
In another embodiment, can via the cost function of management interface appointment for selecting candidate channel.In addition, the statistics of the value and/or the factor affecting cost function etc. of the such as cost function relevant with wireless network jockey with wireless network can be shown by use management interface.
Fig. 3 illustrates all or part of the computer system 2000 being suitable for realizing the embodiment of the present invention.Fig. 3 is the block diagram being suitable for realizing the computer system 2000 of the embodiment of the present invention of such as personal computer or other digital device etc.The embodiment of computer system 2000 comprises: the such as dedicated Internet access device of WAP (wireless access point), the network switch, hub, router, hardware firewall, network traffics optimizer and accelerator etc.; Network additive storage device; And combination.
Computer system 2000 comprises for software applications and the CPU (CPU) 2005 of operation system alternatively.CPU2005 can comprise more than one process core.Memory 2010 stores the application program and data that CPU2005 uses.The example of memory 2010 comprises dynamic and static state random access memory.Storage device 2015 is provided for the nonvolatile memory of application program and data, and can comprise fixing or removable hard disk drive, flash memory device, ROM memory and CD-ROM, DVD-ROM, blue light, HD-DVD or other magnetic, optics or solid-state storage device.Memory 2010 can store the firmware image comprising application program and data being suitable for computer system 2000 and performing.
Optional user input apparatus 2020 is by the user's input communication from more than one user to computer system 2000, and the example of user input apparatus 2020 can comprise keyboard, mouse, joystick, digitizing tablet, touch pad, touch-screen, stillcamera or video camera and/or microphone.In an embodiment, user input apparatus can be omitted, and computer system 2000 can use such as web page or NMP and network management software application program, presents user interface by network to user.
Computer system 2000 comprises the more than one network interface 2025 that permission computer system 2000 carries out via electronic communication network and other computer system communicating, and can comprise the wired or wireless communication on the wide area network of local area network (LAN) and such as internet etc.Computer system 2000 can support the various network connection protocol of more than one abstract level.Such as, computer system can support that in seven layers of OSI network model one is with the network connection protocol on upper strata.The embodiment of network interface 2025 comprises and is applicable to use radio wave (such as using the 802.11 agreement families of such as 802.11a, 802.11b, 802.11g and 802.11n etc.) and wireless client and other wireless network jockey to carry out the more than one radio network interface communicated.
The embodiment of computer system 2000 can also comprise the cable network connecting interface such as being connected with the more than one Ethernet that other network connection device carries out communicating via local area network (LAN) or wide area network.In another embodiment, computer system 2000 can use the cable network connecting interface power supply in such as Ethernet system, receives the part or all of electric power needed for it via network interface 2025.
Each assembly of the computer system 2000 comprising CPU2005, memory 2010, data storage device 2015, user input apparatus 2020 and network interface 2025 is connected via more than one data/address bus 2060.In addition, some or all Components integration of the computer system 2000 of CPU2005, memory 2010, data storage device 2015, user input apparatus 2020 and network interface 2025 will can be comprised in more than one integrated circuit or integrated antenna package.In addition, all or part of assembly of computer system 2000 application-specific integrated circuit (ASIC) (ASIC) and/or FPGA (Field Programmable Gate Array) can be embodied as.
Power supply 2030 provides electric power to computer system 2000.Power supply 2030 is applicable to and obtains electric power from the connection with power distribution network.In an embodiment, power supply 2030 is connected with network interface 2025, to connect from the more than one cable network of the network electric power standard using such as IEEE802.3af etc. the electric power obtained for computer system 2000.
Although various embodiments of the present invention have been described with reference to IEEE802.11 standard, various embodiments of the present invention have been equally applicable to other standard and ad Hoc wireless network agreement.In addition, various embodiments of the present invention are not limited to 802.11 wireless networks and connect, and can be applicable to the communication network of any type needing the network between Client wireless network device and radio network device to connect.
According to this specification and accompanying drawing, those of ordinary skill in the art can design other embodiment.In other embodiments, combination or the sub-portfolio of foregoing invention can advantageously be carried out.For the ease of understanding, the block diagram of this framework and flow chart are divided into groups.But, should be appreciated that, in optional embodiment of the present invention, the combination of block, the new interpolation of block and reconfiguring of block can be considered.Therefore, can think, this specification and accompanying drawing are only exemplary and not restrictive.But, it is evident that, various amendment and change can be carried out when not departing from the wider spirit and scope of the present invention described in claims.
Claims (25)
1., for selecting a method for the radio network information channel of wireless network jockey, described method comprises:
Identification step, for identifying available wireless network channel;
Determining step, for the cost function of at least one attribute based at least one the available wireless network channel in described available wireless network channel, determines the value at cost of available wireless network channel described in each;
Select step, for based on described value at cost, select described available wireless network channel one of them as the first candidate channel;
Forwarding step, for sending for the first channel request message of described first candidate channel by the first wireless network jockey to arbiter means, wherein said first channel request message comprises the described radio frequency neighborhood of the first wireless network jockey and the mass value of RF neighborhood, wherein, described arbiter means receives at least second channel request message from second wireless network jockey for described first candidate channel, and wherein said second channel request message comprises the mass value of the RF neighborhood of described second wireless network jockey; And
Allocation step, for receiving the channel approval message from described arbiter means in response to described first wireless network jockey, described first candidate channel is assigned as the radio network information channel that described first wireless network jockey uses by described first wireless network jockey, wherein when being judged as the mass value of the mass value of RF neighborhood of described first wireless network jockey lower than the RF neighborhood of described second wireless network jockey, described arbiter means sends described channel approval message to described first wireless network jockey, wherein said arbiter means is that described first wireless network jockey and described second wireless network jockey are addressable, and the network connection device different with described second wireless network jockey from described first wireless network jockey.
2. method according to claim 1, wherein, the mass value of the RF neighborhood of described first wireless network jockey is based on the average received signal strength from described second wireless network jockey.
3. method according to claim 1, wherein, the mass value of the RF neighborhood of described first wireless network jockey is based on the minimum received signal strength from described second wireless network jockey.
4. method according to claim 1, wherein,
When being judged as the mass value of the mass value of RF neighborhood of described first wireless network jockey lower than the RF neighborhood of described second wireless network jockey, described arbiter means, to described second wireless network jockey transmission channel refuse information, selects the second candidate channel to make described second wireless network jockey.
5. method according to claim 4, wherein,
In response to receiving described channel refuse information, described second wireless network jockey, when selecting described second candidate channel, gets rid of described first candidate channel.
6. method according to claim 4, wherein,
In response to receiving described channel refuse information, described first candidate channel, when selecting described second candidate channel, is included by described second wireless network jockey.
7. method according to claim 1, wherein, also comprises:
Radio network information channel group is monitored, to identify described available wireless network channel.
8. method according to claim 7, wherein, carries out the supervision to radio network information channel group in turn.
9. method according to claim 7, wherein, carries out the supervision to radio network information channel group at random.
10. method according to claim 1, wherein, also comprises:
When being assigned with described first candidate channel, for interference, monitor described first candidate channel;
In response to the interference to described first candidate channel, repeat described identification step, described determining step, described selection step, described forwarding step and described allocation step to select and to distribute the second candidate channel.
11. methods according to claim 10, wherein, monitor that described first candidate channel comprises:
Monitor the RF environment be associated with described first candidate channel.
12. methods according to claim 10, wherein, monitor that described first candidate channel comprises:
Monitor the channel utilization be associated with described first candidate channel.
13. methods according to claim 10, wherein, monitor that described first candidate channel comprises:
Monitor the cyclic redundancy check error rate be associated with described first candidate channel.
14. methods according to claim 10, wherein, monitor that described first candidate channel comprises:
Monitor the channel noise floor be associated with described first candidate channel.
15. methods according to claim 10, wherein,
In response to the described interference detected described first candidate channel, repeat described identification step, described determining step, described selection step, described forwarding step and described allocation step immediately to select and to distribute described second candidate channel.
16. methods according to claim 10, wherein,
After the described interference to described first candidate channel being detected; during arranged downtime, repeat described identification step, described determining step, described selection step, described forwarding step and described allocation step to select and to distribute described second candidate channel.
17. methods according to claim 16, wherein, also comprise:
When the described interference to described first candidate channel being detected, store the attribute of at least one the available wireless network channel in described available wireless network channel,
Wherein, the self-inspection that use stores measures attribute during the described interference to described first candidate channel, repeats described identification step, described determining step, described selection step, described forwarding step and described allocation step to select and to distribute described second candidate channel during described arranged downtime.
18. methods according to claim 1, wherein, receive described cost function via management interface.
19. methods according to claim 1, wherein, also comprise:
When being assigned with described first candidate channel, the value at cost of described first candidate channel is supplied to management interface.
20. 1 kinds, for selecting the system of the radio network information channel of wireless network jockey, comprise
First wireless network jockey;
Arbitration device;
Wherein said first wireless network jockey is configured to:
Identify available wireless network channel;
Based on the cost function of at least one attribute of at least one the available wireless network channel in described available wireless network channel, determine the value at cost of available wireless network channel described in each;
Based on described value at cost, select described available wireless network channel one of them as the first candidate channel;
Send the channel request message for described first candidate channel to arbiter means, wherein said channel request message comprises described first wireless network jockey for the determined value at cost of described first candidate channel;
In response to the channel approval message received from described arbiter means, described first candidate channel is assigned as the radio network information channel that described first wireless network jockey uses;
Wherein said moderator is configured to:
Receive from second wireless network jockey, at least second channel request message of described first candidate channel, wherein said second channel request message comprises described second wireless network jockey for the determined value at cost of described first candidate channel;
When being judged as the determined value at cost of described first wireless network jockey value at cost determined lower than described second wireless network jockey, send described channel approval message to described first wireless network jockey, wherein said arbiter means is described first wireless network jockey and the addressable network connection device of described second wireless network jockey.
21. systems according to claim 20, wherein, when being judged as the determined value at cost of described first wireless network jockey value at cost determined lower than described second wireless network jockey, described arbiter means, to described second wireless network jockey transmission channel refuse information, selects the second candidate channel to make described second wireless network jockey.
22. systems according to claim 21, wherein, in response to receiving described channel refuse information, described second wireless network jockey, when selecting described second candidate channel, gets rid of described first candidate channel.
23. systems according to claim 21, wherein, in response to receiving described channel refuse information, described first candidate channel, when selecting described second candidate channel, is included by described second wireless network jockey.
24. systems according to claim 20, wherein, described first wireless network jockey is further configured to: monitor radio network information channel group, to identify described available wireless network channel.
25. 1 kinds, for selecting the system of the radio network information channel of wireless network jockey, comprising:
Identify the device of available wireless network channel;
Based on the cost function of at least one attribute of at least one the available wireless network channel in described available wireless network channel, determine the device of the value at cost of available wireless network channel described in each;
Based on described value at cost, select the device of one of them alternatively channel of described available wireless network channel;
Send for the device of the first channel request message of described candidate channel by the first wireless network jockey to arbiter means, wherein said first channel request message comprises the described radio frequency neighborhood of the first wireless network jockey and the mass value of RF neighborhood, wherein, described arbiter means receives at least second channel request message from second wireless network jockey for described candidate channel, and wherein said second channel request message comprises the mass value of the RF neighborhood of described second wireless network jockey; And
The channel approval message from described arbiter means is received in response to described first wireless network jockey, described candidate channel is assigned as the device of the radio network information channel that described first wireless network jockey uses, wherein when being judged as the mass value of the mass value of RF neighborhood of described first wireless network jockey lower than the RF neighborhood of described second wireless network jockey, described arbiter means sends described channel approval message to described first wireless network jockey, wherein said arbiter means is that described first wireless network jockey and described second wireless network jockey are addressable, and the network connection device different with described second wireless network jockey from described first wireless network jockey.
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| WO2012033603A3 (en) | 2013-06-06 |
| US9002277B2 (en) | 2015-04-07 |
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| US20170295586A1 (en) | 2017-10-12 |
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